Machine for making insulated nails



v C. C. BLAKE. MACHINE FOR MAKJNGINSULATED NAILS.

, APPLICATION FILED MAYIB. I9I8.

llatented Apr. 4, 1922.

1.3 SHEETS-SHEET I-A I .-.J... ...IIIILII-....IIIIIIIII.-. w Y

/U IIIIIIIIII ll 3 iff-111,951@

C. C. BLAKE. MACHINE lFOR MAKFNG INSULATED NAILS. APPLLcATloN FILED M.AY1.8.l-91.a

1,41 1,951. Patented Ap124, 1922.`

13 SHEETS-SHEET 2| C. C. BLAKE.

MAcHmE roH MAKING :Nsumfn mns( 4 APPLICATION FILED MAY 181 1918. 1,41 1 .951; Patented-Apr. 4, 1922.

3 SHEETS-SHEETS- VEN TUR lo. Bruhn..

New

c. C. BLAKE( I3 SHEETS-SHEET 4.

Patented Apr. 4, 1922 C. C. BLAKE. MACHINE FOR MAKING INSULATED NAILS. APPLICATION man 1m/18.1918.

13 SHEETS-SHEET 5.

E. 5 A ./NVENT@ Patented Apr. 4., 1922.

C. C. BLAKE. MACHINE Foa MAKING INSULATED NAILS. APPLICATION FILEDF lMAY I8. 1918.

1,41 1,951. Patented Apr. 4, 1922;;

L3 SHEETS-SHEET 6.

C. Clv BLAKE. MACHINE FOR MAKING msuLATEn NAILs.

gAPPLICATION FILED MAY 18, 1911.8-

1,41' 1,951. "Patented Apr. 4,1922. 1 5.a 97 13 SHEETS-SHEETYV?.

C. C. BLAKE. MACHINE FOR MAKING INSULATED NILS. APPLICATION FILED MIU/18,1918.

k1,41 1,951. Patented Apr. 4,1922.

13 SHEETS-SHEET 9.

' C. C. BLAKE. y MACHINE ma MAKmG msuLATEn MAILS.

l APPLICATION FILED'MAY lf3-,1918. K 1,41 1,951. 1 Patented-Apr. 4, 1922.

13 SHEETS-SHEET 10.

C. C. BLAKE. MACHINE FOR MAKING INSULATED NAILS.

l APPLICATION FILEDMAY 1.8. 19m. 1,41 1,951. v

C. Cf

BLAKE.

MACHINE FOR MAKING INSULATED NAILS.

APPLICATION -F'ILED MAYAB, 1918.

' 4Patented Apr; 4,1922.

13 SHEETS-SHEET l2.

C. C.. BLAKE.

MACHl-NE FOR MAKINGJNSULATED. NAILS." APfUCATION FILED, MAY I8, 1918.

1,41 1,95 1. Patentd Apr. 4, 1922.

Z2 EIB 'CHARLES C. BLAKE, OF BROOKLINE, MASSACHUSETTS.

MACHINE FOR MAKING' INSULTED vNAJLS. i

Appicaton filed May 18,

To (177 whom it may concern.'

lie it known that l, @Hannes C. Brama, a citizen of the Fnitcd States, residing at Brookline, 'in the county of Norfolk and State of Massachusetts, have invented certain improvements in Machines for Making Insulated Nails, of which the following description. in connection with the accompanying drawings; is a specification, like reference characters on the drawings indicating like parts in the several figures.

The present invention relates to machines for making insulated nails for securing telephone wires to woodwork.

lt has been proposed to secure telephone wires to woodwork by an insulated nail comprising a nail, the head of' which is embedded in a wooden block provided with a libre cap for binding the block inlcompressed condition on the nail.

The object of the presentinvention is to produce an automatic machine for making the insulated nail hereinbe fore referred to.

To the accomplishment of this object, and such others as may hereinafter appear, the various features of the present invention relate to certain devices,v combinations and arrangements of parts fully set forth hereinafter, the advantages of which will be readily understood by those skilled in the art.

Thevarious features of the present invention will be readily understood from an inspection of the accompanying drawings.

illustrating the best form of the invention at present devised, in which,

Figure l is a plan;

Fig. 2 is a detail in right side elevation of a portion of the machine; `v l Fig. 3 is a detail in left side elevation of the portiqn of the machine illustrated in Fig. 2;

Fig. 4 is a detail in front elevation;

F ig. k5 is a detail in front sectional elevation; l

Fig. 6 is a detail in left side sectional elevation;

Fig. 7 vis a detail in front elevation, partly y in section, showing the operation of the insulated nail forming mechanism: Fig. S is apdetail similar to Fig. T; but showing the operation of the insulatednail ejecting mechanism;

Fig. 9 is a detailv `n sectionalplan of the nail transferring and fibre feeding mechanisms;

Specification otLetters Eatent.

Patented Apr. 4t, 192:2.

serial no. assets.

Fig. lt) is a detail in left side elevation of the parts shown in Fig. 9; i

Fig. 1l is a detail in left side elevation, partly in section, of the nail pot and associated parts; Fig. l2 is a detail in front elevation, partly in section, of the parts shown in Fig. l1;

I Fig. 13 is a detail in plan, partly in section, of the parts shown in Fig. l1;

Fig. 14 is a plan of the block pot; Fig. l5 is a frontl elevation of' the block P0 '5 Fig. 1G is a left side sectional elevation of the block pot;

Fig. 1T is a broken front elevation of the fibre tempering apparatus;

Fig. 1S is a plan of the fibre tempering apparams;

Fig. il) is a det-ail of the electric heating apparatus for heating the water in the tank of the fibre tempering apparatus;

Fie'. 2O is a detail in sectional plan of the nail transferring mechanism; I

` Fig. 2l isa detail similar to Fig. 2() showingt'he transferring mechanism in another position;

Fig. 22 is a sectional detail showing roll feed for the fibre;

Fig. 23 is a sectional detail showing the operation of the nail ejecting mechanism;

Fig. 24C is a sectional detail of the block transferring station;

Fig. is a. sectional detail of the block center punching station;

Fig. 26 is a sectional detail of the nailing station;

Fig. 27 is a sectional detail of the insulated nail formingstation, the various parts being in their normal inoperative positions;

Fig. 28 is a sectional detail of the insulated nail forming station, the dinker having operated to dink out the fibre cap;

Fig. 29 is a sectional detail of the insulated nail forming station, the plunger operating to force the assembled nail block and capup through the dinker;

Fig. 30 is a. sectional detail ,of the insulated nail' forming station, the various parts being in their final nail formingposition, and i' Fig. 31 is a detail in sectional elevation of t-he insulated nail made by the machine.

The insulated nail 3l) produced by the machineembodying the features of the present invention comprises a nail L having a the ioo

wooden cl Viat 2 thereon which is provided with a teat 3 to facilitate its passage between a pair of telephone wires 4. The cleat 2 is comprcssial upon the nail 1 `and is bound in compresstal condition on the nail by a binder or cap 5 molded from a` disk of fibre.

Referring now to Figs. 23 to 3() for a preliminary general description of the machine for makingtbe insulated nail illustrated in Figfvlll. the three materials used in making the insulated nails` namely, the nails 1. t he cylindrical wooden blocks for the cleats 2, and the libre for the caps 5, are stored in storage stations from which they are drawn as needed and assembled at a forming station where the three parts of the insulated nail are united. To this end the machine is provided with a rotary plate (i (Figs. (i, 9, 1U. 2l to 39) having' ten pockets T therein (Fig. 9). The plate (i rotated in a step by step manner to register each of the pock` ets T successively with an opening 8 at a block inserting station A (Figs. 9 and 21). The inserted block 2 is carried during the next rotative movement of the plate G to a block center punching station B (Figs. 9 and 25) where the block 21s punched at 9 to accurately determine the position of the mail 1 which is driventhrough the block 2 at a nail driving station C (Figs. 9 and 26) which the block reaches at the end of the second rotative step of the plate G. At the endv of the seventh rotative step of the plate (i (Fig. 9) the block and nail are registered at the nail forming station D (Figs. 9. 2iv to 30). At the station D the blockand nail are positioned within a die holder 19 having supporting ways 11 for a strip of fibre 12 (Fig. 27). holder 10 is provided with a (linker-13 which dinks out` a disk or cap 5 (Fig. 28) .from the strip of fibre. The dinker 13 is normally held elevated to clear the strip of vfibre by a coiled spring '14 and is depressed to dink out the cap :i

with the upper end the dinker to form a die cavity 18. After th`e cap 5 is dinked out of the strip of fibre. by the dinker 13 a plunger 19- (Fig. 23) is elevated and lifts the block with its contained nail out of the pocket T and pushes the assembled cap. block and nail up through the restricted throat `1i' of the (linker (Fig. 29). During this movement of the plunger 19 the cap 5 is provided with a circumferentially depending skirt molded over the top of the block 2 into the wood of which it slightly sinks (Fig. 29). Thereafter continued elevation of the plunger 19 forcibly pushes the nail` block and molded cap into the die cavity# 18 (Fig. 29) whereupon the block .is compressed upon the nail and molded within the depending skirt of the cap. At the same time the upper end 20 of the plunger 19 .bearing 23 and another bearing 29 The die.

by a plunger 15 having abutton shaped cavity 16 therein which cooperatesl forms the teat 3. The plunger 15 is then elevated and an ejector 21 is pushed up through the plunger 19 to eject the formed insulated nail from the machine (Fig. 23).

The plate (i (Fig. (i) moves during its rotative movement over a stationary disk 22 (Figs. 5 and (S) supported upon the upper end of a long bearing 23 formed in an ex `tension piece of a Vvertical girder 21 (Fig. 2) having at its lower end a horizontal plate (Fig. 1) bolted to the top of a table 2li. IThe plate G is'secured to a collar 2T (Figs. 5 and t3) on a vertical shaft 2S `iournaled in thel (Fifi- 2) formed on a girder 3() bolted to the bottom ofthe plate 25. At its lower end the shaft 28 carries a pin wheel 31 which driven intermittently by an irregular worm 32 on a short shaft 33 journaled in the girder 30. The shaft'33 carries` a bevel gear 31 which meshes with a similar gear 35 on a vertical shaft 3C jonrualed in `the girders l2-tand 3l). The shaft 3G providedwith a pulley 3T (Fig. 1) which is'driven from a counter shaft 38, journaled in bearings 39 carried hy the rear legs l() `of the table 2G, by a belt 41 which passes around the pulley3 and a pulley 112 on the shaft 38. The shaft 3R carries a loose pulley 43 which is driven from a motor -lt+1 on a bottom shelf on the table 26v by a belt L15 passed over the pulley 43 and a pulley 1G on the motor shaft. The pulley 13 may be clutched to the shaft 38 to transmit motion thereto by an internal clutch member, splined on the shaft 38. and operatively connected, for movement into and out of engagement with the pulleyy 43. to a toggle 1S which is made and broken by manipulation of a handle 49 connected to a rock shaft 5() jonrnaled in the table 2G and suit ably connected to one of the links of the toggle 18. lith these connections the plate (3 is rotated in a step by step manner to reg ister the pockets successively with the block inserting station A (Figs. 9 and 24) at which station the blocks are inserted. one at a time. in the plate 6.

To this end the machine is provided with a block transferrer 51 (Figs. 2, 5, 10 and 2A) which lifts the blocks 2, one at a time, from a chute 52 (Figs. 3` 5, 9` 10, 15 and 24) and inserts them in the plate 6. 'The bloc i transferrer 51 is secured to a slide 52 (Fig. 5) mounted to slide in ways formed on the girder 21 beneath a cover plate 54 (Fiigs. 2 and 5). The. slide 53 is connected by a link 55 (Fig. 2) to one end of a lever 56 pivoted on a stud 5T supported b v a bracket 58 secured to the bearing 23. The other end of the. level' 56 is provided at its free end with a roll G0 engaging a cam groove 61, formed in the peripheral face of a disk 62 on the shaft 36 and shaped to give the proper reciprocatingr movement to the transferrer 51 through the connections described.

The blocks 2 are introduced into the machine initially through a magazine 63 (Fig. 16) formed on a frame 64 which is connected to a ring 65 by three bolts 667 67 and 68 (Fig. 15).. 'lhe ring 65 is connected to a three-armed spider 69 by the bolt 67 and two other bolts 70 and 71 (Fig. 15). The spider 69 is bolted to a bracket 72 (Fig. 14) bolted to the girder 24. When the bloc-ks 2 are thrown .into the magazine 63 they fall into a pot 7 3 boltedi to a. disk 74 secured to a horizontal shaft journaled in the magazine frame 64 and spider 69. rl`he pot 73 is made in two pieces secured together by fastenings 76 so as to leave a central slot 77 between the two sections, shaped to permit the blocks in the pot to slip edgewise therethrough.

The pot 73 is rotated in the direction of the arrow (Fig. 15) and as the pot rotates the blocks fall edgewise into the slot 77 and against the inside wall of the ring 65 along which they roll until they arrive at an opening 78 in the ringwhich registers with the chute 52. lf the chute 52 is empty the bloc-ks 2 roll to the right (Fig. 15) into theochute. If the chute ,is full, as shown in Fig. 15, the blocks 2 collect in a. pocket l7 8a adjacent the opening 78 and these collected blocks cause the blocks in the slot 77 to roll to the left (Fig. 15) and drop back into the pot. 'The chute 52 is provided with a central .way 79 for the passage of the blocks 2 and this way and the pocket 78a are covered with a cover 80 of transparent material to permit inspection.

The chute 52 is connected at its upper end to the ring 65 (Figs. 15 and 16). At its lower end the side walls of the chute are extended to straddle a. terminal 81 (Fig. 24) which forms a limiting stop for t-he blocks. The extended ends of the chute rest upon the tie'plate joining the bearing 23 to the girder 24 (Fig. 4). In order to permit the chute to be cleared of blocks without running the blocks through the operating mechanism of the machine the extended leg 82 of the chute on the left (Fig. 4) is made removable. 'l`o this end the leg 82 of the chute is separate from the rest of the chute and carries a thumb screw 83 (Fig. 10) by means of which the leg 82 may be secured to the chute 52 or detached therefrom when it is desired to clear the chute of blocks.

y In, order to rotate the-pot 73 the shaft 75 is provided with apulley 84 (Figs. 14 and 16) driven from a belt 85 the upper and lower bights of which are deflected by a pair of idlers 86 (Figs. 1 and 13) rotatably mounted ou a. bracket 87. The bracket 87 is secured to a casting 88 mounted upon vthe upper ends of a pair of legs 89 rising from the top of the table 26. The. belt is driven by a pulley 90 (Figs 1. 12 and 13) on a horizontal sh'aft 91 journaled in the casting 88.

The shaft 91 is driven by a crossed belt 92 from a horizontal shaft 93 (Fig. 11)7 journaled in a` plate 94 bridging the legs 89, which passes over pulleys 95 and 96 on the shafts 91 and 93, respectively. The shaft 70 93 is dniven by a. belt 9.7 from ashaft 98 (Fig. 1) journaled in earings supported from the undersurface of the top of the table 267 which passes over pulleys on the shafts 93 and 98. The shaft 98 is driven from the 75 shaft 38 by a. belt 99 which passes over pulleys and 101, on the shafts 98 and 38, re.- spectively.

ln order to centerpunchthe block at the station B the machine-is provided with a S0 center punch 102 (Fig. 25) formed on the lower end of a. rod 103 (Fig. The rod 103 is carried by a. slide 104 mounted to slide in ways formed on the girder 24 beneath a. cover plate 105 (Fig. 2) secured to the gir- 35 der 24. The slide 104 is connected by a link 106 to one end of a lever 107 pivoted ou a stud 108 carried by the girder 24. The other end of the lever 107 is provided with a roll 109 engaging a cam groove 110 formed 90 in a` cylindrical cam 111 on` the shaftrj. Y T he center punch 102 is guided in its ver-1.M tical movements by a. tube 112 (Fig. The tube 112 is carried by a` block 113 supported by a horizontal ledge on a block 114 95 which secured to a flat surface 115 formed on theI girder 24.

The slide 104 (Fig. 5) also carries a nail driver 116 whiclroperates within a nail passager 117 (Fig. 6) formed in the block 113 to 100 drive a nail through the block located at the station C.- The passage 117 registers with an opening 118 formed in a cylindrical throat 119 screwed into the plate 114. The nail is centered in thethroat for the opera- 105 tion of the driver by yielding sections 120 (four in number) mounted to slide upon the bottom of the throat 119. The vsections are normally held together by leaf springs 121, one for each section, each spring being se- 110 cured at its opposite ends to the throataud section piece. respectively. The springs 121 normally hold the sections closed `to hold a nailin the position illustrated in Fig. 6. When the driver engages the nail the sec- 115 tions open under the driving pressure. The extent to which the sections'open is limited by a ring 122. surrounding the sections. se- I cured to the block 113.

The Anails are stored in a hopper 123 120 (Figs. 11. 12 and 13) 4fastened to a bed'plate 124 therefor which is detachably connected to a fiat surface 125 secured to a stud 126 rotatably mounted in the plate 94. .The bed plate 124 is provided with a key way 127 125 so that the plate may be slid into place by engagement of the way 127 with a key 128 formed on the surface 125. The bed plate 124 is secured in position by a pin 129 arranged to pass centrally through the stud 130 126, key 128 and into a hole 1.30

the bed plate. u Q

The hopper .123 rotates within a ring 131 formed in.

(Fig. 121) formed on a hood- .132 cast with` face 139 on thedisk (Fig. 11).

The pickers comprise a curved bar having a central slot 14() (Figs. 12 and 13) therein so that asthe picker sweeps through the mass of nails in the hopper the shanks of some of the nails will enter the slot'140 with the heads of the nails resting on the surface 141 (Fig. 11). Each picker is secured to a pairof pins 142 projecting laterally from an arm143 loosely mounted on a plate 144 carried by a disk 145 mounted on the shaft 91. The arms 143 during the time the pickers 'sweep through the mass of nails in the hopper 123 hang downwardly underithe influence of gravit-y against a pin 146 on the plate 144 as shown in the case of the arm 143 for the picker 135 in Fig. 11. As the picker moves in the direction of the arrow (Fig. 11) the arm 143 leaves the pin 146 and a curved surface 147 on the picker engages and rides upon the peripheral edge of the disk 138 until the slabbed-of surface 139 is reached at which time the nails caught by their heads on the surface 141 `on the picker slide off the picker into the raceway 137. Thereafter during the continued rotation of the shaft 91 the 'pickel' reaches a position where it must fall forwardly under theinfluence of gravity until the arm 143 thereof strikes against the pin 146. The sudden stop of the fall of the picker is sutli- .cient to jar loose any nails on the picker 150 secured at one which, for some cause, were not delivered to the raceway 137, and cause them to fall back into the hopper 123. The pickers during the movements described for them are held from lateral play by a disk 148' on the shaft 91.

The nails delivered vto the raceway 137 slide down the raceway, `jump a gap 149 (Fig. 11) and land upon a second raceway v end upon a bracket 151 on the plate 94 and at its other endfupon the plate 114 (Fig. 6). The object of the gap 149 is t0 permit the nails to drop back into the pot when the raceway 150 is full of nails. The raceway 150 is provided with a central roadway for the nails, leading directly into the passage 117 (Fig. 20) the heads of the nails sliding upon the top `of the r-acewa-y vwith the Shanks of the nails depending in the '17) and over upon a platform roadway (Fig. 6). The roadway of the raceway is covered by a guard 152 loosely mounted upon a pair of horizontalistuds 153 (Fig. 1) and 154 (Figs. 9 and 11)),the guard heilig held against the heads of the studs by a leaf spring 155 (.Fig. 1).

ln order to transfer the nails from the raceway 151) to the nail passage .117 the Ina chine is provided with a pair of steel blades 156 and 157 (Figs 2() and 21) arranged so that there is an inclined slot 158 between them. The blades are connected toa slide 159 (Fig. 5) arranged to slide in ways formed on the back of the block 113 (Fig. 1U). The slide 159 is provided with a lateral pin 16() which is embraced by a slot 161 formed in the vertical arm of a bell crank lever 162 pivoted on a stud 163 carried by the girder 24. The horizontal arm of the bell crank lever is provided with a roll 164 engaging' a cam groove 165 formed in a cylindrical cam 166 on the shaft 36 and shaped to impart reciprocating move-A vmost nail in the Araceway drops into the opening of the inclined slot 159 along which itis transferred until it drops into the passage 117 upon the next reciprocating movemcnt of the blades.

The strip of fibre for the cap 5 is stored in a reel 167 (Fig. 1) mounted on a bracket 168 rising from the table 26. The ,strip of fibre passes from the reel over a guide roll 169 F igs. 1 and 17), secured to a cylindrical tank 170, beneath a roll 171 mounted on a plunger 172 loosely contained with the tank 170, over a guide roll 173 similar to the guide roll 169. between a tension device 174 (Fig.

on a bracket 176 secured to the gil-der 24.

the lowermost nail in the 175 formed The platform 175 leads the strip to the sup?.

yporting ways 11 in the die holder 10. The

fibre is fed through the die holder by a pair of feed rolls 177 and178 (F '7, 8 and 22).

The upper feed roll 177 is mounted Aon a shaft 179. journaled in the bracket 176, which is driven through the bevel gears 180 from ashort shaft 181 also journaled in the bracket 176. The shaft 181 is provided with a bevel gear 182 which is driven by a bevel Vgear 183 secured to the upper end of the.

shaft 28 (Fig. 6).

The lower feed roll 178 is mounted on a shaft 184.journaled in a yoke 185 carried by a vertical slide 186 mounted to slide on the side of one of a pair of ways 187 formed on the girder 24. The noll'178 is yieldinglyim.- pelled towards the roll 177 bya spring 188 interposed between the slide 186 and a boss 189 onl the way 187. In order to separate the rolls against the pressure of the spring 188 theslide carries a pivoted lever 190, one end of whichA engages a convenientpart of -the girder 24, and the other end of which 1s formed as a handle 191. The shaft 184 is ydriven from the 'shaft 179 by a gear 192 on the shaft 179 which engages a gear 193 on the shaft 184. The gears 192 and 193 are covered by a gear guard 194.

In order to temper the strip of fibre the tank 170 is filled with water which is maintained at a temperature of substantially 180 degrees F., by an electric heating apparatus 195 (Figs. 17 and 19) mounted in the base of -the tank.

The plunger 15 (Figs. 27 to 30) which actuates thedinker 13 and at the same time cooperateswith the dinker to form the die cavity 18 is connected to a slide 196 (Fig. 6)

and is guided in its vertical movements by a plate 197. vThe plunger 15 `is connected -to the slide throu'gh `a.movable wedge 198 so that an adjustment may be effected between the slide and the plunger. The slide 196 slides in ways formed on the girderA 24 beneath a cover plate 199. The slide 196 is providedwith a pin 200 upon which is pivoted a link 201 pivoted to the vertical arm of a bell crank lever 202 pivoted on a stud.

203 secured to the girder 24. The horizontal arm of the bell crank lever 202 is provided with a roll 204 (Fig. 3) engaging acam 205, .formed in a cylindrical cam 206 on the shaft 36, and shaped to impart proper reciprocating movements to the plunger 15 through the connectionsdescribed.

` In order to actuate the plunger 19 (Figs. 27 to 30) which forces the assembled nail, block and cap up through the dinker 13 and into the die cavity 18 the plunger 19 is secured to a slide 207 (Figs. 6, 7 and 8) mounted. to slide in the ways 187 beneath cover plates 208 (Fig. 3). The slide 207 is connected by a link 2.09 (Fig. 3) to one arm of a bell crank lever 210 pivoted on the girder 30 and having a roll 211-engaging a cam groove 212 formed in a cylindrical cam 213 on the shaft 36, and shaped to impart proper reciprocating movements to the plunger 19 through `the connections described.

fterthe insulated-nail has been formed the plunger` 15 is .elevated `andA the ejector 21 (Fig. 23) is then actuated to eject the in-v sulated nailefrom the machine: To this end the slide 207 carries a lyoker 214 (Fig. 7)

upon which is pivoted` aleverl215 having one end connected by a link 216' to the ejector 21. The other en'doftheflever 215 is provided with a roll' 217'fwhich at the propery time in the elevation of the vplunger 19 is engaged by a cam 218 ony the shaft36. The

' ejectorl 21 is returned to its original posi'- tion relativelyv to the yplunger 19 upon the return of the plunger to its lowermost position by a spring 219. The spring 219 is coiled around a rod 220, pivoted to the lever 215, and interposed between a shoulder 221 on the rod and a lug 222, on the yoke 219, through which the rod 220 loosely passes.

The ejected insulated nail falls into a chute 223 (Fig. 6). In order to insure that the nail will fall into the chute 223 the machine is provided with a blower 224 (Fig. 1) driven bya belt 225 from the shaft of. the motor 44. A pipe 226 leads from the vblower and this pipe feeds three other pipes 227, 228 and 229. The pipe 227 terminates .at a point back of the station D (Fig. 6)

so as to blow the 'ejected insulated nail into the .chute 223. The pipe 228 |(Fig. 20) terminates at a point adjacent the raceway 152 so that, the airl therefrom may aid in transferring the nails into the nail passage 117. The pipe 229 (Fig. 10) terminates at the station B to blow chips produced in the center punching opera-tion out of the ma chine.

In operating the machine the pot 73 (Fig. 16) is provided with blocks, the pot 123 (Fig. 11) with nails, and a roll of bre is placed upon the reel 167 (Fig. 1). The loose end of the fibre is then conducted through the tank 170 (Fig. 17) and left upon the platform 175 (Fig. 4) temporarily. The machine is then started b v manipulation of the handle 49 (Fig. 1). Upon start-ing the machine the transferrer 51 (Fig. 24) transfers a block from the chute 52 to the pocket 7, in the plate 6, located at the station A (Fig. 24). Simultaneously with the operation of the transferrer 51 the center punch 102 and nail driver are operated but as there are no blocks locatedA at the stations B and C (Figs. A25 and 26) nothing happens. If at this time a nail happens to be located in the throat 121 (Fig. 6) it is driven through the pocket'7 at the station C and out of the machine through an opening 230 (Fig. 6). After the tools 51, 102 and 116 are operated and withdrawn the plate 6 is rotated a step to transfer the block located in the plate at Athe block transferring station A to the block center punching station B. During this movement of the plates 6 a nail is withdrawn from the end of the raceway 150 and. transferred `into they passage 1'17from which it drops into the .throat 27) in the die holder 10. The machine is then started. lVhile the tools are operating at the stations A, B and C the plunger 15 is actuated to form the die cavity 18 and depress the dinker 13 to dink out a disk from the strip of libre.4 Thereafter the plunger 19 drives the block with its contained nail against the disk which is carried With the, block and nail upwardly through the dinker 13. This dinker is shaped to provide the i fibre disk-with a circumferenti'ally depending skirt (Fig. 29) sunk slightly into the Wood of the block. The plunger 19 drives the assembled cap, block and nail into the die cavity 18 thus compressing the block on the nail and molding the cap over the nail.to bind the block upon the nailin compressed condition. At the same time the end 20 of the plunge-r 19 forms the teat 3 (Fig. 31).

`Thereafter the plunger 15 'fs withdrawn thus allowing the spring 14 (Fig. 23) to elevate the dinker 13 to its original position. At the same time the ejector 21 is pushed up through the plunger 19 and ejects 'the linished nail from the machinel (Fig. 23). During the operation of the machine blocks and nails are withdrawn from the block Aand nail pots and fed .to the chute 52 and raceway 150, respectively, inv readiness for transferral to the pocket 7 at the station A and the throat 121 at the station B. The

fibre is fed through the Ways 11 by the rolls -177 and 178 the Waste fibre strip 231 passing out of the machine as shown in-Fig. 9. The machine .operates at a high speed making substantially 300'insulated nails a minute.

vobviously, changes may be made in the form; character and relation of the parts herein described, yWithin the scope of the invention, characterizing features of which are .set forth in the claims by the intentional use of generic terms and expressions inclusive of modifications.

What is claimed as-new, is:

1. A capping machine, having, in combii nation, a die holder; means for feeding the material for the cap through the die holder; a tubular die, mounted in the holder, having a cutting edge on lits bottom and a die c avity on its top; means for normallyholdmg the die elevated to permit the feed of the ,cap material through the die holder; meansv for closing the die cavity and depressing the die to'di nka cap from the cap material; and

means for' forcing the capand the material the cap material through the die holder; means for vclosing th'e die cavity and depressing the die to dink a cap from the cap material; means for forcing the cap and the material to be capped up through the die into the closed die cavity; means for ejecting the capped material from the die, and means for operating said ejecting means before said-forcing means is withdrawn from the Vcavity and depressing the die to dink a cap from the cap-material, and means for forcing the cap and the material to be capped up through the die into the closed die cavity.,

4. A capping machine, having. in combination, a die holder;vmeans for feeding the material for the cap through the die holder; means for feeding a compressible block into the die holder; the die holder having means for dinking a cap outof the cap material; a die; and meansfor forcing tlle'cap and block through a portion-of the die to provide the cap with a lcircumferentially depending skirt molded Vover vone end of the block and sunk into the peripheral surface of the block.

5. A capping machine, having, in combination, a die holder; means for feeding the material for the cap through the die holder; means for feeding'a compressible block into the die holder; the die holder having means for dinking a cap out of the cap material; a

die; and means for forcing the cap and block lfirst through a portion'of the die to provide the cap with a circumferentially depending skirt molded over one end of the' block and then into another portion of the die to compress the block and mold the cap on the compressed block.

6. A capping machine, having, in combination, a die holder; means f or feeding the material for the capthrough the die holder; means for feeding a compressible block into thedie holder; the die holder having means for dinking a capout of the cap material;

a die and means for forcing the cap and block first through a portion of the die to provide the cap with a circumferentially depending skirt molded over one end of the block and then into another portion of the die to compress the block and mold the cap on the compressed block comprising a plunger having one end thereof shaped to forma tea't on the compressed block.

7. An insulated nail machine, having7 in sively operating the plunger and ejector'` comprising a slide arranged to support the plunger' and ejector independently, means for operating the slide and separate means ,for operating the ejector'.`

8. An insulated nail machine, having, in

' combination, a die holder; an open ended tubular die mounted in the die holder adapted to receive the nail through one open end; means 'cooperating with the other end of the die to form an enclosed die cavity; and a plunger cooperating vwith the underside of the nail head to form the insulated nail in said die cavity.

9. An insulated nail machine, having, in combination; a die holder; an open ended tubular die mounted in the die holder adapted to receive the nail through one open end; means cooperating with the other end of the die to form an enclosed die cavity; a plunger cooperating with the under side of the nail head to form the insulated nail in said die cavity, and an ejector for ejecting the insulated nail from the die.

10. A cap forming machine, having, in combination, a support; means for feeding the cap material/ over the support; a dinker normally held above the support; and means for depressing the dinker to dink out a cap comprising a plunger, a slide therefor, an adjustable connection 'between the plunger and the slide, and mechanism for reciprocating the slide.

11. A, cap forming machine, having. in combination, a support; means for feeding the cap material over the support; a dinker normally held above the support; means for depressing the dinker to dink out a cap Comprising a plunger, a slide therefor, an Iadjustable connection between the plunger and the slide, and mechanism for reciprocating the slide; and means for providing the cap vwith a circumferentially depending skirt comprising adie and mechanism for forcing the cap into the die.

12. A machine for making insulated nails comprising a nail. a block and a cap having, in combination. means for assembling the block on o nc end of the nail, and means for enveloping the ends of said nail and block with thc cap.

13. `A machine for making insulated nails comprising a headednail and` a block, having. in combination, means for assembling the block on the vheaded end of the nail, and means for compressing the block about said headed end.

14. A machinefor making insulated `nailsA comprising a headed nail anda block having, in combination', means for assembling the block on thel headed end of the nail, means forcompressing the block about said headed end, and means for securing said compressed block to the end of the nail.

15. A machine for making insulated nails comprising a nail, a block and a cap having, in combination, means for assembling the block on one end of the nail, means for compressing the vblock and forming a. teat thereon at one end, and means for securing the cap to the other end of the compressed block. 1G. A machine for making insulated nails, having, in combination, a nailing station including means for driving a nail through a block, a nail storageV station including means for transferring nails fromr the storageA station to the nailing station, a carrier for contion including means for loading the carrier with blocks, and means for Withrawing the blocks from the storage station and delivering them to the transferring station.

17. A machine for making insulatednails, having, .in combination, a center punching stationrfor punching blocks, a nailing station fordrivingthe nails therein, and a carrier forfcarrying the blocks to the various stations.

18.A A machine for making insulated nails, having, in combination, a center punching station for punching blocks, a nailing station for driving-the nails therein, a forming station for forming the completed nail, and a carrier for carrying the blocks to the various stations.

19. A machine for making insulated nails, having, in combination, a centervpunching station for punching blocks, a nailing sta-` tion for driving the nails therein, a forming station for forming the completed nail, a carrier for carrying the blocks to the various stations, an automatic means for loading the carrier with blocks.

20. A machine for making insulated nails, having, in combination, a forming station for forming the nail, means for feeding a strip of fibre through the station, and means ,located at the stat-ion fordinking a disk out' of the strip of fibre.

21. A machine for making insulated nails. 'having,-in combination, a .forming station. Where the ditf'erentparts of the nail are forn'1ed, means for supporting a block having a' nail assembled therewith at 'the station, means for feeding a` strip. of fibre through the station, means located at the station for dinking out a cap from the strip `of fibre, and mechanism for compressing the block'upony the nail and molding the cap upon the compressed block.

22. A machine for malY ng insulated nails V"comprising a nail. a solid block and a cap.

having, in'combination, means for forcing- 

